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C70 subframe brace

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70
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Chuck W  
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Re: C70 subframe brace

Post by Chuck W »

The big mid brace from the verts does make a difference. We have one on both of our cars. The little front V-brace can't be used on the non-vert subframe unless you add threaded inserts to the front to mount it. If you see one of the big braces in the yard, it's usually not a waste of time to grab it (and all of the hardware).

The big one drops in.

I found an Ultra Racing rear brace that we have on her car, and I copied it and made a beefier one for mine. This also adds stiffness, which you can notice.
Last edited by Chuck W on 10 Apr 2023, 18:39, edited 1 time in total.
'97 854 T5 - Manual Swap/M4.4/COP/NA cams/P2R Brakes/16T/ chassis bracing/ XC70 nose swap
'97 855 GLT - Hers. RN swap/16T/COP/VVT/exhaust/302s/Flashed M4.4/ chassis bracing/ 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.
The Others- '83 TBird turbo, '85 Mercury Marquis LTS (1 of 134), '86 LTD Wagon, '81 Granada GL, '76 Beetle, '93 F-150 I6
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scot850  
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Post by scot850 »

I would add that subject to checking at some point, the brace may NOT fit an AWD P80 as I think the rear mounts are used by the center bearing mount on the prop-shaft.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
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FireFox31
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Post by FireFox31 »

Might as well get it if its reasonably cheap and won't take much time. Worst case, you can sell it to someone who is convinced that it's amazing. Seems easy enough to install/remove that it's worth testing.

Another thread mentioned that the C70 also has a small front V brace as well as the large one we know and love. Try to get both and their hardware. The front one may be harder to get because it's under the engine, as I understand. The thread has pictures but I can't find it.
FireFox31
Blue 2000 V70 NA manual, "the V70" - died, reborn, totaled, donated, stripped
Green 2000 V70 NA automatic, "the G70" - awaiting 2nd rehab
Black 2000 V70 NA automatic, "Geronimo" - rescued, rehabilitating
Blue 1998 V70 T5 manual, "the T5M" - awaiting rehab
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Chuck W  
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Post by Chuck W »

FireFox31 wrote: ↑10 Apr 2023, 15:55 Might as well get it if its reasonably cheap and won't take much time. Worst case, you can sell it to someone who is convinced that it's amazing. Seems easy enough to install/remove that it's worth testing.

Another thread mentioned that the C70 also has a small front V brace as well as the large one we know and love. Try to get both and their hardware. The front one may be harder to get because it's under the engine, as I understand. The thread has pictures but I can't find it.
As I mentioned above, the small V bolts to threaded inserts the the subframe. Easy enough to remove if they haven't spin and won't hold while you try and remove the bolts. You will need to copy said mounting provisions in a non-Vert subframe if you want to use it.

We have one that I'll probably use on her car, but I may build something else for mine.
'97 854 T5 - Manual Swap/M4.4/COP/NA cams/P2R Brakes/16T/ chassis bracing/ XC70 nose swap
'97 855 GLT - Hers. RN swap/16T/COP/VVT/exhaust/302s/Flashed M4.4/ chassis bracing/ 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.
The Others- '83 TBird turbo, '85 Mercury Marquis LTS (1 of 134), '86 LTD Wagon, '81 Granada GL, '76 Beetle, '93 F-150 I6
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